Improvement in rendering i



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JAMESWILLARDPATTERSON, or-NEW YORK, N. v., AssIcNoR To SARAH f ELLEN Ainmensos ANDJOHN Asncnorr, or sans PLAGE.

Letters Patent No. 103,1234daterlll[ay 17, 1 870.

IMPROVEIMENI 'IN' RENDERING LARD.

The Shedle referred to in these Letters Patent and making part cfthe same.

To all whom 'it may concern:

`vessel in which the process is performed, said closed cylinder or vessel being suspended inside of another cylinder or vessel, forming a steam-chamber around the entire external ksurface of the inside 'cylinder or vessel; and I do declare that the following isa clear and gexactdescription of the process, and the construction and operation of the mechanical device with which the operation is performed, reference being had `to the accompanying drawings aud the letters ot' retL erence marked thereon.

My invention consists, first, of the process of extracting and refining and rendering lard, tallow, codliverfoil, and the like substances` in partial vacuo, by using the heat of steam operating upon a closed cylin` 4der or vessel, so constructed as to prevent both steam and air from reaching the interior of the cylinder or vessel containing the substance operated on during J the process.

By this process I obtain a larger yield or production fot' these articles, and el'ecta more complete and i thorough refilling process of the Sallie, than by any other process of which I have any knowledge.

The mechanical device which I have adapted to this process consists `of a steam-cylinder or vessel,

withl a movable head, provided with packing, rendering it steam-tight.

I then provide a smaller cylinder or vessel, so constructed that the same can be suspended in the steam-cylinder, and therein supported by braces, leaving a corresponding space around the entire sphere forming a steamichamber, so that an equal amount of heatlshall be dispensed to all portions ot' the inside cylinder. This cylinder is `alsoprovidcd with a closefitting head or cover, and it is in this vessel that the material for extracting, rendering, and refining is confined during the process,'being placed in a metallic case the full size of the insidesurfhce of the cylinder. 'lhis case is provided with a perforated bottom, which is raised on supports, so as to leave a small space below the perforated bottom as a receiver for the lard, talloiv, or oil, from which it is drawn by the regular lard-faucet attached, passing through the steamcylin der into the inside cylinder for that purpose.

The use of the 4metallic case is to afford a ready means' of removingthe scrap or fibrous substances fromj` the cylinder aft-er the tallow, lard, and oil has beengfextracted and pressed out.

Inl combination with the cylinders, I use" ascrewpress, the cross-beam and screw being attachedso as to move onvtrunnions, thereby swinging the same over toone side of the cylinder, when nottin use.

1 also combinewith these devices a meat-u1ill or cutting-machine, vfor the purpose 0f grinding or chopping `into tine particles' the leaf-lard, tallow, and codlivers, so as to facilitate the operation of extracting and rendering.

To enable others'to make and use my invention, I will proceed to describe its construction and operation. Figure l, in the drawing, represents the steamcyliuder, in sectional form, withthe inside cylinder, and the braces supporting the same, wit-h the movable heads of both together, with lard-faucet and steamlFigure 2 represents a vertical sectional view of' the two' cylinders and the braces, with the cutting-machine in place, as in use.

A Figure 3 represents the screw-press, and itsparts, as it appears `in use, in connection with the cylinders. In g. 1.-

c represents the cylinder-head.

O, t-heeye-bolt for raising the-cylinder-head.

It, the outer rim of the head that packsthe cylinder. J, angle-iron, bolted to the outside cylinder, to which the head i's fastened with screw-bolts. l

n, the screw-bolts for securing the head and packing to thetop edge of out-er cylinder. l

m represents the cover to thc inside cylinder.

c,-the steam-chamber surrounding the'inside cylinder. f

d, the braces supporting it in place.l

e, the bottoms of the cylinders.

f, the steam-pipe and connections.

g, the steam-valve.

i, the pipe leading from the inside cylinder to the bottom ofthe outside, connecting with the lard-faucet.

h., the lard-faucet. In lig. 2-

b represents the bottom of the interior cylinder f, the steam-pipe connection.

i, the lard-faucetconnection.

(l, the braces supporting the inside cylinder.

I), the meat-mill for cutting` the leaf-lard.

E represents the screw for the press.

G, the swing-beam.

F, the screw-block. i

J, the -angle-i1'on, to which the cylinder-head is bolted.

H, the t-runnions, on which the swing-beam and N, thc perforated bottom of the metallic case.

Having thus deseribedluy invention, I wish to state that, of all other processes of -which I have any knowledge, not one uses the closed cylinder or vessel, coni- ])letely surrounded with steam, for rendering lard and tallow, ami-extracting the oil from cods livers.

Those devices, ot' which I have a knowledge, each and all of them, either practice injecting steam into the vessel containing the material during the process ot' rendering, or they use the jacket-kettle, which is only partially surrounded by steam, in all instances allowing of evaporation, or allowing air and steam, one or both, t0 circulate with the material during the process. lhese and similar devices are used. But I do not knowkof` any process o'r device now used in rendering and extracting' from the substances I name that use a closed cylinder or vessel, that is so arranged as to be entirely surrounded by the steam, held in pressure, excluding the atmosphere and the steam ii'om the inside cylinder or vessel during the process of extracting and rendering.

Having thus described lthe process and the devices used,

What I claim as new, and desire to secure by Letters Patent of the United Stat-es, is-

l. The process ot' rendering and refining lard, tab low, cod-livers, and like substances, in a reeeptavle inelosed, said receptacle being completely surrounded by steam, thereby preventing loss of substance by evaporation and atn'lospheric action, substantially for the purposes set forth.

2. The combination of a cylinder or vessel entirely surrounded by steam, suspended within another cylinder, so as to form a steam-chamber around the entire sphere or vessel for extracting and rendering purposes.

' 3. The combination ofthe inside and outside cylinders with the space c, the outside cylilnler-head a, the inside cylinder-cover nl, the braces d, the metallic ease i), the connect-ions i, the faucet h, the steam-connections f, and the screw-press, as attached, the whole made substantially as described, and so as to operate in the manner set forth.

Witnesses: JASVILLARD PATTERSON.

M. H. DANIELs, A. Hopmxs. 

